Nicholas La Croix

Nope, never resolved it, Got told it is a sound the motor produces Sent from my iPhone using Tapatalk No on the throttle body spacer Sent from my iPhone using Tapatalk They sent me a new muffler also but it didn't fix a thing Sent from my iPhone using Tapatalk

Yea it's weird, if you were to hear it in person, you would without a doubt pick it up Sent from my Nexus 7 using Tapatalk

Yes I have an airraid intake. I even removed the intake and I still got the whistle through the exhaust. I love love love the corsa sound. Just don't love the whistle that I hear now.

i worked my way back removing the tips, to the muffler, all the way to the spherical clamp. fired up the truck and gave it a couple revs, and the whistle sound was still present... I cant believe it. Am i getting the whistle because the Corsa system is so free flowing? I am thoroughly disappointed.

Yea they sent me a new muffler and still didn't resolve the issue. Haha typical

I'll try taking the tips off, hopefully resolve this.

So I have a 2015 Silverado with the 5.3 motor. Just wanted to get a little more sound out of it so I purchased a Corsa Cat-Back exhaust. Got the exhaust, installation was a breeze in the truck sounded amazing. That didn't last long... Started getting this whistling sound while I was putting a load on the motor. I rechecked all the clamps, everything is seated and sealed nice. Corsa sent me a new muffler, but no dice, still whistling. Corsa is now telling me that it is a sound produced by the motor, and there is nothing I am going to be able to do... Someone please tell me that can't be true. It's a 2015 Silverado with the 5.3... The truck sounds amazing, but I can't stand getting on the freeway and wanted to give it little gas and getting this twistle ish sound. Thanks in advance Nick Here's a video, sucks but for some reason video struggles to get it. Play it a couple times and you'll pick up on it.